docs: def tag_list(package):
      """
      List the tags of a package.
      """
      team, owner, pkg = parse_package(package)
      session = _get_session(team)
  
      response = session.get(
          "{url}/api/tag/{owner}/{pkg}/".format(
              url=get_registry_url(team),
              owner=owner,
              pkg=pkg
          )
      )
  
      for tag in response.json()['tags']:
          print("%s: %s" % (tag['tag'], tag['hash']))